Mold for casting wall slabs



Feb. 1, 1949.

Filed Oct. ll2, 1945 2 S11eets-Sheet l .H..1l1 .|.1111.1111 1|111 1..111111 111111 l. 11.1.11... -l .1111-1 11. L11 L11111f1l11111111|11 L11111. L1L

Feb. 1, v1949. R, PORTER, JR 2,460,532

` MOLD FOR CASTING WALL SLABS Filed Oct. '12, 1945 2 Shees-Sl'leerl 2 gdl l -U -Iff I .ffinnfQ-Wii; vflv J fr jff Patented Feb. 1, 1949 e sistem emes ateri y y horizontal sanas. setmana closing the openings, thestrips being interposed between the iei ai'fxdiiiivslald being loose sQ= thatthey-v lilft away ,from the aforesaid means vwhen the s1ab is lifted. nl a pect the ramecomprises a horizonta-'fbs -p" or spaces to reeeiv'e the members are; open at the-endsl'so lthat themembers maybe inserted aftervthAe--slab has been-cast. v Ina stillrnofes'pecic naspect the apparatus-comprises a pluralitywof formlsfspaced apart to provide the aforesaid spaces therebe tween, the upper sm'faces of the forms being disposed in the same horizontal plane. However in the broader aspect of the invention the surface upon which the slab is cast may comprise a oor having grooves therein to receive the frame members.

For the purpose of illustration a typical embodiment of the invention is illustrated in the accompanying drawings in which Fig. 1 is a plan view with parts broken away;

Fig. 2 is a side elevation;

Fig. 3 is a longitudinal Fig. 1;

Fig. 4 is a perspective view of the aforesaid frame with a part of the slab broken away; and

Fig. 5 is a perspective view of means for preventing the slab from falling oil? the frame when the frame is tilted to upright position.

YThe particular embodiment of the invention section on line 3-3 of chosen for the purpose of illustration comprisesv a plurality of forms spaced apart to provide longitudinal spaces I and transverse spaces 2. These spaces are bridged with longitudinal strip 3 and transverse strip 4 whose upper surfaces are flush daarstrann-are repre-vide appa 2 Claims'. (CIL 252213210 je eil a1 s@ to the upper suirfs'of thiefoi'iis The aforesaid lframe comprises longitudial IB a'rd'"tr'aisvrser bers" I iThe bhgitii'diil'l 'ebsre iiterc rinctedat" one end with a crosspiece I8 and braces I9 to form a rigid U-shaped member. Fast to the inner faces of the longitudinal member I6 are lugs 2| which project up to the upper edges of the trans'- verse members I 'I to keep the latter, which are not fastened to the longitudinal members, from slipping lengthwise. of the longitudinal members when the frame is tilted from horizontal to vertical position. The transverse members are pref erably made in two parts which are intercom nected by bolts extending through openings 22 in their overlapping portions (Fig. 2) to permit them to be adjusted in length so that they do not project beyond the lateral edges of the slab. As shown in the drawings the ends of the spaces I and 2 are open so that the frame members may be inserted after the slab has set. In this operation the U-shaped frame II-IS is slid into place on the guides II with its open end foremost and the transverse members are slipped into place on the guides I2 from one side or the other. To facilitate insertion of the frame members the distance between the longitudinal guides II and the bottom of the longitudinal strip 3 is preferably somewhat greater than the maximum vertical dimension of the frame and the vertical distance between the upper surfaces of the longitudinal guide l l and the transverse guide l2 is preferably somewhat greater than the vertical dimension of the longitudinal members I6.

To prevent the slab from slipping oir the frame When the frame is tilted, the frame is preferably provided with feet 23 which, in the illustrated embodiment, comprise T-shaped pieces 23 sliding into channel guides 24 which are fast to the ends of the longitudinal members i6 and which may project somewhat above the upper surfaces of these members, the members 23 being detachably held in place by pins 26 (Fig.V

3). On their upper ends the members 23 have flanges 2l to prevent the slab from slipping off the feet after the frame has been tilted to upright position.

To provide recesses in the slab for the feet 23, blocks 28 are placed against the inner face of the screed I3. After the slab has set the blocks are removed to admit the feet. The strips 3 should terminate in the vertical planes of the inner faces of the blocks 23 so as not to obstruct the feet. While the blocks 28 should not overlap the ends of the strips 3 they may overlap the adjacent forms enough to hold them up or they may be secured to the inner face of the screed. At the other end of the strips 3 the screed is provided with removable sections 29 to permit the strips and frame to be lifted With the slab without otherwise disturbing that end of the screed.

The closed end of the V-shaped frame may be provided with one or more movable hooks to overhang the edge of the slab to prevent the slab tipping off the frame when tilted to upright position. These hooks may be mounted on the frame either pivotally or slidably to permit them torbe moved back and forth between operative and inoperative positions. The particular means shown in Figs. 4 and 5 comprises a hook slidable back and forth on one of the longitudinal frame members I6. The hook comprises a piece of angle-iron 3| fastened toa piece of channel-iron 32 which is mounted between two pieces 33 and 34, the parts 32, 33 and 34 having sliding engagement with le frame I6 on all four sides of the frame mem- In lifting the slab from the bed the frame, or at least the open end thereof,is preferably lifted 4 vertically before being tilted to upright position, so that the screed along the edge of the slab at the open end of the frame need not be removed. While the frame may be lifted in any suitable way it is preferably lifted by a jack under each of the two feet 24, After the open end of the frame has been thus lifted the other end of the frame is lifted by a crane or the like to tilt the slab into upright position. After it is secured in this position the frame is loweredto 4disengage the feet from the lower edge of the slab.

It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents which fall within the scope of the appended claims.

I claim:

1. In the art of casting wall slabs the combination of means having a horizontal oor upon which a slab may be cast, narrow elongate longitudinal and transverse sections of said floor'being freely liftable away from said means, said means having spaces under said sections to receive longitudinal and transverse members, said spaces being open at the ends so that the members may be inserted into the spaces longitudinally and transversely respectively after the slab has been cast.V

2. In the art of casting wall slabs the combination of means having a 'horizontal floor upon which a slab may be cast, narrow elongate longitudinal and transverse sections of said floor being freely liftable away from said means, said means having spaces under said sections to receive longitudinal and transverse members in superposition at different levels, said spaces being open at the ends so that the members may be inserted into the spaces longitudinally and transversely respectively after the slab has been cast.

VLESLIE ROSS PORTER, JR.

R,EFERENCEsV CITED The following referemiesl are of record in the file of this patent:

UNITED STATES PA'IENTS Number Y Name Date 841,136 Fisher Jan. 15, 1907 884,440 Wernicke Apr. 14, 1908 1,148,246 Marvin July 27, 1915 

